Updated play button icon for paused animations

The current play button is mostly white and hard to see with the new
animation videos. This updates it to one which has more blue to stand
out better.

Fixes: 78306799
Test: manual (while watching one of the animations at Settings -> System
-> Gestures; tap the video to pause)
Change-Id: I48deb6c35eccb3ecd21f2aa6dcc3d275c7436f47